FAMILY CCELOPID.E 377 



3. Legs with spines, bristles or bristly hairs 4 



Legs with soft hair only stejnegeri Aklrich 



4. Abdomen with bristles en the disc of the apical segments. 



nebularum Aldrich 

 Abdomen with bristles only on the sides and apices of the segments 

 (Atlantic Coast) frigida Fabricius 



5. Legs usually blackish (western coast) 6 



Legs reddish yellow frigida Fabricius 



6. Cheeks with dense, soft, rather short hair; arista pubescent under high 



power stejnegeri Aldrich 



Checks with sparse hair which is coarse above; arista quite bare. 



nebularum Aldrich 



